词条 | square piano |
释义 | square piano musical instrument ![]() The strings of the square (actually rectangular) piano run horizontally across the instrument from side to side, like those of a clavichord, which probably was the source of the design. The earliest square pianos were difficult to keep in tune, but engineering improvements and the introduction of metal frames stabilized the case. The compass gradually grew from the original five octaves but seldom reached the 88-key range of modern pianos. The soundboard likewise grew in size, and late square pianos were often longer than 6 feet (1.8 m) and heavier than comparable grand pianos. Near the end of the 19th century, square pianos were supplanted by upright pianos, which allowed larger soundboards, extended range, and reduced weight and floor space. |
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